The was used by the united states to patrol coastal waters during the 1920s and 1930s

president jefferson protested this interference in american trade. he sent james monroe to london to negotiate a treaty. jefferson wanted britain to stop taking sailors from american ships, and to stop interfering in the trade of neutral nations. monroe tried many times to discuss such an agreement. but the british foreign minister was always too busy to see him.

explanation:

answer; i believe the two groups were irish immigrants and chinese immigrants;